Basket for centrifugal machines.



E. ROBERTS & A. H. GIBSON.

BASKET FOR OENTRIFUGAL MACHINES.

APPLICATION FILED PEB.13,1913.

1,108,098, Patentd Aug. 18, 1914.

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EUGENE ROBERTS AND ANGUS H. GIBSON, Oi? Lari-II, UTAH, ASSIGNORS 'llb SUGAR CENTRIFUGAL DISGHARGER COMPANY, OF SALT LAKE CITY,'UTAI-I, A CORPORA- TION OF UTAH.

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Specification. of Letters Patent.

BASKET FOR CENTRIFUGAL MACHINES.

Patented Aug. 18, 1914..

To all 1071 0711 it may concern Be it known that we, l lnonxn Honours and AJJGUS H. (iIBSUN, citizens of the United States, and residents of liehi, county of Lehi, State of Utah, have invented certain new and useful improvements in Baskets for Centrifugal Machines, of which the following is a specification. 3

This invention relates to the basket-screen of a centrifugal inachint and is intended to provide an eflicient and satisfactory mode of fastening the ends of the foraminous plate or screen which forms the peripheral wall of the basket.

It is the common practice to cut the p ates used for such screens of suti'icient length so that when bent into cylindrical form and inserted in the basket frame, the two ends overlap each other, while being free to, expand or slip over each other in a circumferential direction. This arrangement, however, results in an accumulation of sugar in the crack between the two overlapped ends, and as the ends are free to spread apart lat orally a considerable mass of unpurified sugar may accumulate in this space and cause the inner end of the screen or wall to project inwardly so as to seriously interfere with the plow used for discharging or scraping away the sugar fronrthc inside when the basket is discharged of its load.

This invention consists in so constructing the screen that the overlapped ends are interlocked so as to prevent the accumulation of sugar and the s n'eading apart of the overlapped ends while allowing the two ends to slip slightly over each other in a circumferential direction as the screen stretches or expands in actual service.

To this end the invention comprises a foraminous sheet or screen, preferably of metal, one of whose ends is slotted from the end edge inwardly to form a series of tongues, the other end being provided with a series of narrow oblong perforations extending in a direction parallel to the adjacent edge, and so disposed as to receive and retain a portion of the tongues, while the other tongues, preferably each alternate tongue, is passed out side of the end provided with retaining slots or perforations.

In the drawings we have illustrated the preferred form of embodying the principles of this invention.

Figure 1 is a plan iew of the flat tongue of foraminous material before it is bent into cylindrical forin for insertion .into the basket; Fig. 2 is a perspective view of the screen or wall in operative position; and Fig. 3 is a verti -al plan or edge view showing the position of the interlocking tongues. In the practice of the invention according to the form illustrated in the drawings we take a sheet of suitable material whose width corresponds to the depth of the circumferential wall of the basket and bend back one end edge on itself along the line of a 'series of transverse narrow apertures a which extend parallel to the adjacent edge a short distance therefrom. i

The opposite end of the foraininous sheet is slotted transversely in 'ard from the edge so as to form a series of tongues 7), each alternate tongue being formed to aline with a corresponding aperture (1. in the opposite end of the sheet a, the sheetor blank is then bent orcurled into cylindrical form with the flap or end a bent back outside of the sheet along the line of the apertures a. The opposite ends are then brought together and the tongues 7) are pushed through the apertures (1., the other series of tongues b, or preferably each alternate tongue, passes outside of the turned-back flap or end portion (1. so that the perforated end is held between the tongues b, b but in such a manner that the sheet under the action of centrifugal force and the heavy wall of sugar built up on the inside of the screen, may be free to expand slightly but without any lateral separation of the interlocked ends. With this arrangement it is not possible to accumulate any appreciable amount of sugar or other solid material between the overlapped ends, nor is it possible for the overlapped ends to spread apart so as to interfere with the satisfactory operation. of a discharger plow. The basket 0 may be of any usual or suitable construction, while we prefer to form the tongues 7) and the overlapping members of the opposite edge which form so to speak retaining straps, integrally from the sheet of metal itself. It will, of course, be understood that such details are not essential, the important requisite being that the free ends of the screen should be'interlocked to prevent lateral separation.

' lVhat We claim is: I '1. A screen for a centrifugal basket comprising a iforaminous sheet, one of whose ends is provided with a series of elongated perforations adjacent to and substantially parallel with the edge of said end, the other end being slit transversely to its edge inwardly to form a series of tongues, a portion of which are disposed to pass through the said elongated perforations to form an interlocking engagement between the two ends to prevent lateral separation of the ends, substantially as described.

2. A. screen for a centrifugal basket comprising a foraminous sheet of flexible rnaterial, one of whose ends is folded back exteriorly and provided. with a series of interrupted elongated perforations at the line of said fold, the other end of said sheet being slotted inwardly from its edge to form a series of circumi'erentially extending tongues some of which are disposed to aline with and pass through said perforations when the two ends are brought together, the remaining tongues being passed outside of the opposite end whereby the two ends are interlocked against lateral separation while allowing circumferential expansion, substantially as described.

3. A basket for a centrifugal machine einbracing a irame, a removable peripheral wall or screen whose ends are overlapped,

License series of overlapped interwoven tongues and strap members while permitting circumferential play of the ton ues in relation to the strap members, substantially as described.

5.'A screen for a centrifugal basket embracing a toraminous sheet bent into approximately circular form, the ends of said sheet being provided respectively with a series of projecting tongues and a corresponding series oi receiviin j slots by which the ends maybe overlapped and interwoven to prevent their lateral separation while permitting play oi. the tongues in the slotsvin a oircmn'lercntial direction substantially as described.

6. A cylindrical screen for a sugar centrifugal machine, comprising a :forarnin'ous bent sheet having one longitudinal edge bent outwardly upon itself 'to provide a flap disposed wholly exleriorly of said sheet and lying flat thereon, said sheet being provided at the bending point with. spaced longitudinal slots, said. sheet havingits opposit longitudinal edge transversely slittcd at spaced intervals to provide inner and outer sets of outwardly oil'set tongues the inner set of outwardly oii'set tongues fitting within the slots whereby the inner wall of the double walled edge of the sheet is substantially flush with thcinner wall of the opposite edge of said sheet, and the outer set of tongues engaging the exterior of said flap, the two sets of tongues, together with the slotted double walled edge of the sheet effecting a circuinferentially yieldablc joint which is incapable of having its parts laterally separated.

In witness whereof, we have subscribed the above specification.

EUGENE ROBERTS. ANGUS H. GIBSON.

In. the presence oi GEO. N. GODDARD, Gnonsn A, ltocmvnnn. 

